fact-family/add-sub-within-20/hard · Sett 93
6 problems
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1
Write the fact family for 16, 4, 20:
=
2
Write the fact family for 19, 1, 20:
=
3
Write the fact family for 11, 6, 66:
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4
Write the fact family for 6, 10, 60:
=
5
Write the fact family for 2, 7, 9:
=
6
Write the fact family for 18, 2, 20:
=